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18,179 Matching Results
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Enhanced Control of Mercury by Wet Flue Gas Desulfurization Systems--Site 2 Results
The U.S. Department of Energy and EPRI are co-funding this project to improve the control of mercury emissions from coal-fired power plants equipped with wet flue gas desulfurization (FGD) systems. The project is investigating catalytic oxidation of vapor-phase elemental mercury to a form that is more effectively captured in wet FGD systems. If successfully developed, the process could be applicable to over 90,000 MW of utility generating capacity with existing FGD systems, and to future FGD installations. Field tests are being conducted to determine whether candidate catalyst materials remain active towards mercury oxidation after extended flue gas exposure. Catalyst life will have a large impact on the cost effectiveness of this potential process. A mobile catalyst test unit is being used to test the activity of four different catalysts for a period of up to six months at each of three utility sites. Catalyst testing at the first site, which fires Texas lignite, was completed in December 1998. Testing at the second test site, which fires a Powder River Basin subbituminous coal, was completed in the fall of 1999, and testing at the third site, which fires a high-sulfur bituminous coal, will begin in early 2000. This technical note reports …
Date:
February 1, 2000
Creator:
Blythe, G.; Miller, S.; Richardson, C. & Searcy, K.
Object Type:
Report
System:
The UNT Digital Library
ENVELOPE OSCILLATIONS AND HALO FORMATION IN BUNCHED BEAMS: A PERTURBATIONAL APPROACH
None
Date:
February 1, 2000
Creator:
Allen, Christopher K.
Object Type:
Article
System:
The UNT Digital Library
Environmental Management Performance Report 11/1999
The purpose of the Environmental Management Performance Report (EMPR) is to provide the Department of Energy Richland Operations Office's (DOE-RL's) report of Hanford's Environmental Management performance by: US Department of Energy, Richland Operation
Date:
February 1, 2000
Creator:
EDER, D.M.
Object Type:
Report
System:
The UNT Digital Library
EPA/NMED/LANL 1998 water quality results: Statistical analysis and comparison to regulatory standards
Four governmental agencies conducted a round of groundwater, surface water, and spring water sampling at the Los Alamos National Laboratory during 1998. Samples were split among the four parties and sent to independent analytical laboratories. Results from three of the agencies were available for this study. Comparisons of analytical results that were paired by location and date were made between the various analytical laboratories. The results for over 50 split samples analyzed for inorganic chemicals, metals, and radionuclides were compared. Statistical analyses included non-parametric (sign test and signed-ranks test) and parametric (paired t-test and linear regression) methods. The data pairs were tested for statistically significant differences, defined by an observed significance level, or p-value, less than 0.05. The main conclusion is that the laboratories' performances are similar across most of the analytes that were measured. In some 95% of the laboratory measurements there was agreement on whether contaminant levels exceeded regulatory limits. The most significant differences in performance were noted for the radioactive suite, particularly for gross alpha particle activity and Sr-90.
Date:
February 1, 2000
Creator:
Gallaher, B.; Mercier, T.; Black, P. & Mullen, K.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of Improved Techniques for the Removal of Fission Products from Process Wastewater and Groundwater: FY 1998 and 1999 Status
None
Date:
February 2000
Creator:
Bostick, D. T. & DePaoli, S. M.
Object Type:
Report
System:
The UNT Digital Library
An evaluation of new high resolution image collection and processing techniques for estimating shrub cover and detecting landscape changes associated with military training in arid lands
Research funded by the US Department of Defense, US Department of Energy, and the US Environmental Protection Agency as part of Project CS-1131 of the Strategic Environmental Research and Development Program evaluated novel techniques for collecting high-resolution images in the Mojave Desert using helicopters, helium-filled blimps, kites, and hand-held telescoping poles at heights from 1 to 150 meters. Several camera types, lens, films, and digital techniques were evaluated on the basis of their ability to correctly estimate canopy cover of shrubs. A high degree of accuracy was obtained with photo scales of 1:4,000 or larger and flatbed scanning rates from films or prints of 300 lines per inch or larger. Smaller scale images were of value in detecting retrospective changes in cover of large shrubs, but failed to detect smaller shrubs. Excellent results were obtained using inexpensive 35-millimeter cameras and new super-fine grain film such as Kodak's Royal Gold{trademark} (ASA 100) film or megapixel digital cameras. New image-processing software, such as SigmaScan Pro{trademark}, makes it possible to accurately measure areas up to 1 hectare in size for total cover and density in 10 minutes compared to several hours or days of field work. In photographs with scales of 1:1,000 and …
Date:
February 1, 2000
Creator:
Hansen, D.J. & Ostler, W.K.
Object Type:
Article
System:
The UNT Digital Library
Export and Molecular Level Characterization of Dissolved and Particulate Organic Matter from the Mid-Atlantic Bight. Final Report
None
Date:
February 1, 2000
Creator:
Repeta, Daniel J.; Eglinton, Timothy I. & Chen, Robert F.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, February 1, 2000
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 2000
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[F. Weigl Iron Works]
Photograph of the F. Weigl Iron Works (located at 104 Red River) in Austin, Texas.
Date:
February 1, 2000
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
Fast transfer of shared data
The Event Transfer system enables its users to produce events (data) and share them with other users by utilizing shared memory on either Solaris or Linux-based computers. Its design emphasizes speed, reliability, ease of use, and recoverability from crashes. In addition to fast local operation, the ET system allows network transfer of events. Using multi-threaded code based on POSIX threades and mutexes, a successful implementation was developed which allowed passing events over 500 kHz on a 4 cpu Sun workstation and 150 kHz on a dual cpu PC.
Date:
February 1, 2000
Creator:
Timmer, C.; Abbott, D.J.; Heyes, W.G.; Jostizembski, E.; MacLeod, R.W. & Wolin, E.
Object Type:
Article
System:
The UNT Digital Library
FCC Record, Volume 15, No. 4, Pages 1859 to 2555, January 24 - February 4, 2000
Biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Date:
February 2000
Creator:
United States. Federal Communications Commission.
Object Type:
Book
System:
The UNT Digital Library
FCC Record, Volume 15, No. 5, Pages 2556 to 3384, February 7 - February 18, 2000
Biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Date:
February 2000
Creator:
United States. Federal Communications Commission.
Object Type:
Book
System:
The UNT Digital Library
Federal Grazing Regulations: Public Lands Council v. Babbitt
This report discusses new regulations on livestock grazing on lands managed by the Bureau of Land Management became effective August 21, 1995. Many aspects of the new regulations were challenged in Public Lands Council v. Babbitt. A federal district court upheld many of the regulations, but struck down four of them and enjoined their implementation. At the appellate level, only the new regulation allowing conservation use to the exclusion of livestock grazing for the full term of a permit was held invalid. The Supreme Court has agreed to hear the case and argument has been set for March 1, 2000.
Date:
February 1, 2000
Creator:
Baldwin, Pamela
Object Type:
Report
System:
The UNT Digital Library
Femtosecond electron and x-ray generation by laser andplasma-based sources
The generation of ultra-short x-rays by Thomson scattering intense laser pulses from electron beams is discussed, including recent experimental results and methods for enhancing the x-ray flux. A high flux of x-rays in a femtosecond pulse requires the generation of femtosecond electron bunches and a head-on Thomson scattering geometry. The generation of ultrashort electron bunches in a plasma-based accelerator with an injection technique that uses two colliding laser pulses is discussed. Simulations indicate the bunches as short as a few fs can be produced. Conversion of the fs electron pulse to a fs x-ray pulse can be accomplished by Bremsstrahlung or Thomson scattering.
Date:
February 1, 2000
Creator:
Esarey, E. & Leemans, W. P.
Object Type:
Article
System:
The UNT Digital Library
Final report: A Broad Research Project in the Sciences of Complexity
Previous DOE support for ''A Broad Research Program in the Sciences of Complexity'' permitted the Santa Fe Institute to initiate new collaborative research within its Integrative Core activities as well as to host visitors to participate in research on specific topics that serve as motivation and testing-ground for the study of general principles of complex systems. The critical aspect of this support is its effectiveness in seeding new areas of research. Indeed, this Integrative Core has been the birthplace of dozens of projects that later became more specifically focused and then won direct grant support independent of the core grants. But at early stages most of this multidisciplinary research was unable to win grant support as individual projects--both because it did not match well with existing grant program guidelines, and because the amount of handing needed was often too modest to justify a formal proposal to an agency. In fact, one of the attributes of core support has been that it permitted SFI to encourage high-risk activities because the cost was quite low. What is significant is how many of those initial efforts have been productive in the SFI environment. Many of SFI'S current research foci began with a short …
Date:
February 1, 2000
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Final Report: A Broad Research Project on the Sciences of Complexity, September 15, 1994 - November 15, 1999
DOE support for a broad research program in the sciences of complexity permitted the Santa Fe Institute to initiate new collaborative research within its integrative core activities as well as to host visitors to participate in research on specific topics that serve as motivation and testing ground for the study of the general principles of complex systems. Results are presented on computational biology, biodiversity and ecosystem research, and advanced computing and simulation.
Date:
February 1, 2000
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Final report for the designed synthesis of controlled degradative materials LDRD
The main goal of this research was to develop degradable systems either by developing weaklink-containing polymers or identifying commercial polymeric systems which are easily degraded. In both cases, the degradation method involves environmentally friendly chemistries. The weaklinks are easily degradable fragments which are introduced either randomly or regularly in the polymer backbone or as crosslinking sites to make high molecular weight systems via branching. The authors targeted three general application areas: (1) non-lethal deterrents, (2) removable encapsulants, and (3) readily recyclable/environmentally friendly polymers for structural and thin film applications.
Date:
February 1, 2000
Creator:
LOY,DOUGLAS A.; ULIBARRI,TAMARA A.; CURRO,JOHN G.; SAUNDERS,R.; DERZON,DORA K.; GUESS,TOMMY R. et al.
Object Type:
Report
System:
The UNT Digital Library
Final report on OPTIMASS: optimizing mass storage organization and access for multi-dimensional scientific data
None
Date:
February 1, 2000
Creator:
Samet, Hanan
Object Type:
Report
System:
The UNT Digital Library
Final state of the Strategic Petroleum Reserve (SPR) Weeks Island Mine
This report documents the decommissioning and abandonment activities at the Weeks Island Strategic Petroleum Reserve (SPR) site, Iberia Parish, Louisiana, that were concluded in 1999. These activities required about six years of intense operational, engineering, geotechnical, and management support efforts, following initiation of site abandonment plans in 1994. The Weeks Island SPR mine stored about 72.5 million bbl of crude oil following oil fill in 1980--1982, until November 1995, when the DOE initiated oil drawdown procedures, with brine refill and oil skimming, and numerous plugging and sealing activities. About 98% of the crude oil was recovered and transferred to other SPR facilities in Louisiana and Texas; a small amount was also sold. This document summarizes recent pre- and post-closure: conditions of surface features at the site, including the sinkholes, the freeze wall, surface subsidence measurements and predictions; conditions within the SPR mine, including oil recovery, brine filling, and the Markel Wet Drift; risk assessment evaluations relevant to the decommissioning and long-term potential environmental impacts; continuing environmental monitoring activities at the site; and, an overview on the background and history of the Weeks Island SPR facility.
Date:
February 1, 2000
Creator:
MOLECKE,MARTIN A.
Object Type:
Report
System:
The UNT Digital Library
Fiscal Year 2001 Budget Request: U.S. General Accounting Office
Testimony issued by the General Accounting Office with an abstract that begins "GAO discussed its fiscal year (FY) 2001 budget request."
Date:
February 1, 2000
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Fluor Hanford Project Focused Progress at Hanford
Fluor Hanford is making significant progress in accelerating cleanup at the Hanford site. This progress consistently aligns with a new strategic vision established by the U.S. Department of Energy's Richland Operations Office (RL).
Date:
February 1, 2000
Creator:
HANSON, R.D.
Object Type:
Article
System:
The UNT Digital Library
[Flyer: Blacks and Jews]
Flyer advertising a film screening of "Blacks and Jews" hosted by the Junior Black Academy of Arts and Letters on February 12, 2000.
Date:
February 2000
Creator:
Junior Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Flyer: Marlena Smalls and the Hallelujah Singers]
Flyer advertising a musical performance hosted by the Junior Black Academy of Arts and Letters on February 11-13, 2000, at the Muse Cafe Theatre.
Date:
February 2000
Creator:
Junior Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Flyer: Nick LaTour]
Flyer advertising the performance of a one man show featuring Nick LaTour and hosted by the Junior Black Academy of Arts and Letters on February 4-5, 2000 at the Muse Cafe Theatre.
Date:
February 2000
Creator:
Junior Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library